CHECKLIST OF THE AMPHIBIA OF MEXICO 73 



Genus PLECTROHYLA Brocchi « 



Pledrohyla Brocchi, Bull. Soc. Philom. Paris, ser. 7, vol. 1, 1877, p. 93.— IIart- 

 WEG, Occ. Pap. Mus. Zool., Univ. Michigan, No. 437, 1941, p. 1. 



Cauphias Brocchi, Bull. Soc. Philom. Paris, ser. 7, vol. 1, 1877, p. 129 (type same 

 as for Pledrohyla) . 



Genotype. — Pledrohyla guatemalensis Brocchi. 



Range. — Chiapas and Guatemala. 



Species. — Five, of which two occur in Mexico. 



KEY TO MEXICAN SPECIES OF PLECTROHYLA 



1. Snout terminating in a sharp point, the canthus with a sharp edge; nostrils 

 not 80 far forward as lip; skin very pustular, rough, in males; toes 

 webbed to near terminal pads on third and fifth toes, leaving two joints 

 free on fourth; tympanum more or less visible; tarsal fold not a free 



flap; size 45 mm sagorum (p. 73) 



Snout blunt, truncate, the region about nostrils swollen, elevated; nostrils 

 at extreme anterior part of snout, anterior to or as far forward as edge 

 of upper lip; tarsal fold forming a long free flexible flap; toes webbed to 

 terminal disk except on fourth, which has distal joint nearly free; tym- 

 panum almost or completely hidden by thick pustulate skin; known 

 maximum size, 45 mm matudai (p. 73) 



PLECTROHYLA MATUDAI Hartweg 



Pledrohyla matudai Hartweg, Occ. Pap. Mus. Zool. Univ. Michigan, No. 437, 



1941, pp. 5-10.— Taylor and Smith, Proc. U. S. Nat. Mus., vol. 95, 1945, 

 pp. 596-597, fig. 60D, pi. 29. 



Pledrohyla "Form a" Hartweg and Orton, Occ. Pap. Mus. Zool. Univ. Michigan, 

 No. 438, 1941, pp. 2-5, figs. 1-2.— Taylor, Univ. Kansas Sci. Bull., vol. 28, 



1942, pp. 39-40 (on tadpoles). 



Type.—UniY. Michigan Mus. Zool. No. 88863. 

 Type locality. — Mount Ovando, District of Soconusco, Chiapas, 

 Mexico. 



Range.— Known only from the type locality and vicinity. 



PLECTROHYLA SAGORUM Hartweg 



Pledrohyla sagorum Hartweg, Occ. Pap. Mus. Zool. Univ. Michigan, No. 437, 

 1941, pp. 2-5, pi. 1, figs. 1, 2, 3.— Taylor and Smith, Proc. U. S. Nat. Mus., 

 vol. 95, 1945, pp. 597-598, fig. 60E, pi. 30. 



Pledrohyla "Form b" Hartweg and Orton, Occ. Pap. Mus. Zool. Univ. Michigan, 

 No. 438, 1941, pp. 5-6 (tadpoles). 



TT/pe.—Univ. Michigan Mus. Zool. No. 88862. 

 Type locality.— Mount Ovando, District of Soconusco, Chiapas, 

 Mexico. 



Range. — Known only from the type locality and vicuiity. 



31 The iip.me Boana Gray is apparently the earliest name for Central and South American frogs with a 

 rudimentary poUex. This antedates Hypsiboas, which has been used for the Rroup. The name Plectrohyla 

 Brocchi is tentatively retained, since there seems to be a possible generic difference in the characters of the 

 spine on the pollex and the vomerine teeth between the northern forms and those in southern Central 

 America and South America, which are referable to Boana. 



